A40 tr headset +mixamp m80 NOT WORKING

So i just went to gamestop and got the a40 +mixamp m80 when i opened the box the headset read a40tr headset i plug the m80 into my XBOX ONE controler then into the head set. Before i did this i made sure EVERYTHING was updated... nothing is working not the sound not the mic nothing is lighting up on the m80. I just spent over 200 dollars on this headset and im extremely upset that this point. The headset and instructions both read xbox on them. I followed the instructions to the T and this nothing. Not really sure what to do at this point just considering returning this item and not bothering with this brad anymore